Synopsis:
The tribute to the Guardians of the Galaxy continues. Sonic's troubles in the alternate future version of Mobius go from bad to worse, as the harbinger of doom arrives - and his name is Silver Snively. That can only mean on thing: his master, the incarnation of doom itself, can't be far behind - none other than Robolactus. Can Sonic and the future Freedom Fighters stop this menace before he has a chance to erase them from the history books.